80
88
except ImportError:
81
89
SO_BINDTODEVICE = None
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
94
logger.addHandler(syslogger)
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
100
logger.addHandler(console)
92
stored_state_file = "clients.pickle"
94
logger = logging.getLogger()
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
111
return interface_index
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
118
syslogger = (logging.handlers.SysLogHandler
120
logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
122
syslogger.setFormatter(logging.Formatter
123
('Mandos [%(process)d]: %(levelname)s:'
125
logger.addHandler(syslogger)
128
console = logging.StreamHandler()
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
logger.addHandler(console)
134
logger.setLevel(level)
137
class PGPError(Exception):
138
"""Exception if encryption/decryption fails"""
142
class PGPEngine(object):
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
145
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
146
self.gnupgargs = ['--batch',
147
'--home', self.tempdir,
155
def __exit__(self, exc_type, exc_value, traceback):
163
if self.tempdir is not None:
164
# Delete contents of tempdir
165
for root, dirs, files in os.walk(self.tempdir,
167
for filename in files:
168
os.remove(os.path.join(root, filename))
170
os.rmdir(os.path.join(root, dirname))
172
os.rmdir(self.tempdir)
175
def password_encode(self, password):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
encoded = b"mandos" + binascii.hexlify(password)
179
if len(encoded) > 2048:
180
# GnuPG can't handle long passwords, so encode differently
181
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
182
.replace(b"\n", b"\\n")
183
.replace(b"\0", b"\\x00"))
186
def encrypt(self, data, password):
187
passphrase = self.password_encode(password)
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
passfile.write(passphrase)
192
proc = subprocess.Popen(['gpg', '--symmetric',
196
stdin = subprocess.PIPE,
197
stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
200
if proc.returncode != 0:
204
def decrypt(self, data, password):
205
passphrase = self.password_encode(password)
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
passfile.write(passphrase)
210
proc = subprocess.Popen(['gpg', '--decrypt',
214
stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
216
stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
219
if proc.returncode != 0:
221
return decrypted_plaintext
102
224
class AvahiError(Exception):
103
225
def __init__(self, value, *args, **kwargs):
197
325
dbus.UInt16(self.port),
198
326
avahi.string_array_to_txt_array(self.TXT))
199
327
self.group.Commit()
200
329
def entry_group_state_changed(self, state, error):
201
330
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
331
logger.debug("Avahi entry group state change: %i", state)
204
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
334
logger.debug("Zeroconf service established.")
206
335
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
336
logger.info("Zeroconf service name collision.")
209
338
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
339
logger.critical("Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
341
raise AvahiGroupError("State changed: {0!s}"
214
344
def cleanup(self):
215
345
"""Derived from the Avahi example code"""
216
346
if self.group is not None:
349
except (dbus.exceptions.UnknownMethodException,
350
dbus.exceptions.DBusException):
218
352
self.group = None
219
def server_state_changed(self, state):
355
def server_state_changed(self, state, error=None):
220
356
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
357
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
365
if state in bad_states:
366
if bad_states[state] is not None:
368
logger.error(bad_states[state])
370
logger.error(bad_states[state] + ": %r", error)
225
372
elif state == avahi.SERVER_RUNNING:
376
logger.debug("Unknown state: %r", state)
378
logger.debug("Unknown state: %r: %r", state, error)
227
380
def activate(self):
228
381
"""Derived from the Avahi example code"""
229
382
if self.server is None:
230
383
self.server = dbus.Interface(
231
384
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
385
avahi.DBUS_PATH_SERVER,
386
follow_name_owner_changes=True),
233
387
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
388
self.server.connect_to_signal("StateChanged",
235
389
self.server_state_changed)
236
390
self.server_state_changed(self.server.GetState())
393
class AvahiServiceToSyslog(AvahiService):
395
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({0}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
404
def timedelta_to_milliseconds(td):
405
"Convert a datetime.timedelta() to milliseconds"
406
return ((td.days * 24 * 60 * 60 * 1000)
407
+ (td.seconds * 1000)
408
+ (td.microseconds // 1000))
239
411
class Client(object):
240
412
"""A representation of a client host served by this server.
243
_approved: bool(); 'None' if not yet approved/disapproved
415
approved: bool(); 'None' if not yet approved/disapproved
244
416
approval_delay: datetime.timedelta(); Time to wait for approval
245
417
approval_duration: datetime.timedelta(); Duration of one approval
246
418
checker: subprocess.Popen(); a running checker process used
263
436
interval: datetime.timedelta(); How often to start a new checker
264
437
last_approval_request: datetime.datetime(); (UTC) or None
265
438
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
439
last_checker_status: integer between 0 and 255 reflecting exit
440
status of last checker. -1 reflects crashed
441
checker, -2 means no checker completed yet.
442
last_enabled: datetime.datetime(); (UTC) or None
267
443
name: string; from the config file, used in log messages and
268
444
D-Bus identifiers
269
445
secret: bytestring; sent verbatim (over TLS) to client
270
446
timeout: datetime.timedelta(); How long from last_checked_ok
271
447
until this client is disabled
448
extended_timeout: extra long timeout when secret has been sent
272
449
runtime_expansions: Allowed attributes for runtime expansion.
450
expires: datetime.datetime(); time (UTC) when a client will be
452
server_settings: The server_settings dict from main()
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
455
runtime_expansions = ("approval_delay", "approval_duration",
456
"created", "enabled", "expires",
457
"fingerprint", "host", "interval",
458
"last_approval_request", "last_checked_ok",
459
"last_enabled", "name", "timeout")
460
client_defaults = { "timeout": "PT5M",
461
"extended_timeout": "PT15M",
463
"checker": "fping -q -- %%(host)s",
465
"approval_delay": "PT0S",
466
"approval_duration": "PT1S",
467
"approved_by_default": "True",
287
471
def timeout_milliseconds(self):
288
472
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
473
return timedelta_to_milliseconds(self.timeout)
475
def extended_timeout_milliseconds(self):
476
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
291
479
def interval_milliseconds(self):
292
480
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
481
return timedelta_to_milliseconds(self.interval)
295
483
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
484
return timedelta_to_milliseconds(self.approval_delay)
487
def config_parser(config):
488
"""Construct a new dict of client settings of this form:
489
{ client_name: {setting_name: value, ...}, ...}
490
with exceptions for any special settings as defined above.
491
NOTE: Must be a pure function. Must return the same result
492
value given the same arguments.
495
for client_name in config.sections():
496
section = dict(config.items(client_name))
497
client = settings[client_name] = {}
499
client["host"] = section["host"]
500
# Reformat values from string types to Python types
501
client["approved_by_default"] = config.getboolean(
502
client_name, "approved_by_default")
503
client["enabled"] = config.getboolean(client_name,
506
client["fingerprint"] = (section["fingerprint"].upper()
508
if "secret" in section:
509
client["secret"] = section["secret"].decode("base64")
510
elif "secfile" in section:
511
with open(os.path.expanduser(os.path.expandvars
512
(section["secfile"])),
514
client["secret"] = secfile.read()
516
raise TypeError("No secret or secfile for section {0}"
518
client["timeout"] = string_to_delta(section["timeout"])
519
client["extended_timeout"] = string_to_delta(
520
section["extended_timeout"])
521
client["interval"] = string_to_delta(section["interval"])
522
client["approval_delay"] = string_to_delta(
523
section["approval_delay"])
524
client["approval_duration"] = string_to_delta(
525
section["approval_duration"])
526
client["checker_command"] = section["checker"]
527
client["last_approval_request"] = None
528
client["last_checked_ok"] = None
529
client["last_checker_status"] = -2
533
def __init__(self, settings, name = None, server_settings=None):
305
logger.debug(u"Creating client %r", self.name)
535
if server_settings is None:
537
self.server_settings = server_settings
538
# adding all client settings
539
for setting, value in settings.iteritems():
540
setattr(self, setting, value)
543
if not hasattr(self, "last_enabled"):
544
self.last_enabled = datetime.datetime.utcnow()
545
if not hasattr(self, "expires"):
546
self.expires = (datetime.datetime.utcnow()
549
self.last_enabled = None
552
logger.debug("Creating client %r", self.name)
306
553
# Uppercase and remove spaces from fingerprint for later
307
554
# comparison purposes with return value from the fingerprint()
309
self.fingerprint = (config[u"fingerprint"].upper()
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
318
self.secret = secfile.read()
320
raise TypeError(u"No secret or secfile for client %s"
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
556
logger.debug(" Fingerprint: %s", self.fingerprint)
557
self.created = settings.get("created",
558
datetime.datetime.utcnow())
560
# attributes specific for this server instance
331
561
self.checker = None
332
562
self.checker_initiator_tag = None
333
563
self.disable_initiator_tag = None
334
564
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
565
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
341
567
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
568
self.changedstate = (multiprocessing_manager
569
.Condition(multiprocessing_manager
571
self.client_structure = [attr for attr in
572
self.__dict__.iterkeys()
573
if not attr.startswith("_")]
574
self.client_structure.append("client_structure")
576
for name, t in inspect.getmembers(type(self),
580
if not name.startswith("_"):
581
self.client_structure.append(name)
583
# Send notice to process children that client state has changed
348
584
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
585
with self.changedstate:
586
self.changedstate.notify_all()
353
588
def enable(self):
354
589
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
590
if getattr(self, "enabled", False):
356
591
# Already enabled
358
self.send_changedstate()
593
self.expires = datetime.datetime.utcnow() + self.timeout
359
595
self.last_enabled = datetime.datetime.utcnow()
597
self.send_changedstate()
599
def disable(self, quiet=True):
600
"""Disable this client."""
601
if not getattr(self, "enabled", False):
604
logger.info("Disabling client %s", self.name)
605
if getattr(self, "disable_initiator_tag", None) is not None:
606
gobject.source_remove(self.disable_initiator_tag)
607
self.disable_initiator_tag = None
609
if getattr(self, "checker_initiator_tag", None) is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = None
615
self.send_changedstate()
616
# Do not run this again if called by a gobject.timeout_add
622
def init_checker(self):
360
623
# Schedule a new checker to be started an 'interval' from now,
361
624
# and every interval from then on.
625
if self.checker_initiator_tag is not None:
626
gobject.source_remove(self.checker_initiator_tag)
362
627
self.checker_initiator_tag = (gobject.timeout_add
363
628
(self.interval_milliseconds(),
364
629
self.start_checker))
365
630
# Schedule a disable() when 'timeout' has passed
631
if self.disable_initiator_tag is not None:
632
gobject.source_remove(self.disable_initiator_tag)
366
633
self.disable_initiator_tag = (gobject.timeout_add
367
634
(self.timeout_milliseconds(),
370
636
# Also start a new checker *right now*.
371
637
self.start_checker()
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
378
self.send_changedstate()
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
388
if self.disable_hook:
389
self.disable_hook(self)
391
# Do not run this again if called by a gobject.timeout_add
395
self.disable_hook = None
398
639
def checker_callback(self, pid, condition, command):
399
640
"""The checker has completed, so take appropriate actions."""
400
641
self.checker_callback_tag = None
401
642
self.checker = None
402
643
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
405
logger.info(u"Checker for %(name)s succeeded",
644
self.last_checker_status = os.WEXITSTATUS(condition)
645
if self.last_checker_status == 0:
646
logger.info("Checker for %(name)s succeeded",
407
648
self.checked_ok()
409
logger.info(u"Checker for %(name)s failed",
650
logger.info("Checker for %(name)s failed",
412
logger.warning(u"Checker for %(name)s crashed?",
653
self.last_checker_status = -1
654
logger.warning("Checker for %(name)s crashed?",
415
657
def checked_ok(self):
416
"""Bump up the timeout for this client.
418
This should only be called when the client has been seen,
658
"""Assert that the client has been seen, alive and well."""
421
659
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
660
self.last_checker_status = 0
663
def bump_timeout(self, timeout=None):
664
"""Bump up the timeout for this client."""
666
timeout = self.timeout
667
if self.disable_initiator_tag is not None:
668
gobject.source_remove(self.disable_initiator_tag)
669
self.disable_initiator_tag = None
670
if getattr(self, "enabled", False):
671
self.disable_initiator_tag = (gobject.timeout_add
672
(timedelta_to_milliseconds
673
(timeout), self.disable))
674
self.expires = datetime.datetime.utcnow() + timeout
427
676
def need_approval(self):
428
677
self.last_approval_request = datetime.datetime.utcnow()
444
693
# If a checker exists, make sure it is not a zombie
446
695
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
696
except AttributeError:
698
except OSError as error:
699
if error.errno != errno.ECHILD:
453
logger.warning(u"Checker was a zombie")
703
logger.warning("Checker was a zombie")
454
704
gobject.source_remove(self.checker_callback_tag)
455
705
self.checker_callback(pid, status,
456
706
self.current_checker_command)
457
707
# Start a new checker if needed
458
708
if self.checker is None:
709
# Escape attributes for the shell
710
escaped_attrs = dict(
711
(attr, re.escape(unicode(getattr(self, attr))))
713
self.runtime_expansions)
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
463
# Escape attributes for the shell
464
escaped_attrs = dict(
466
re.escape(unicode(str(getattr(self, attr, u"")),
470
self.runtime_expansions)
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
715
command = self.checker_command % escaped_attrs
716
except TypeError as error:
717
logger.error('Could not format string "%s"',
718
self.checker_command, exc_info=error)
719
return True # Try again later
478
720
self.current_checker_command = command
480
logger.info(u"Starting checker %r for %s",
722
logger.info("Starting checker %r for %s",
481
723
command, self.name)
482
724
# We don't need to redirect stdout and stderr, since
483
725
# in normal mode, that is already done by daemon(),
484
726
# and in debug mode we don't want to. (Stdin is
485
727
# always replaced by /dev/null.)
728
# The exception is when not debugging but nevertheless
729
# running in the foreground; use the previously
732
if (not self.server_settings["debug"]
733
and self.server_settings["foreground"]):
734
popen_args.update({"stdout": wnull,
486
736
self.checker = subprocess.Popen(command,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
491
self.checker_callback,
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
740
except OSError as error:
741
logger.error("Failed to start subprocess",
744
self.checker_callback_tag = (gobject.child_watch_add
746
self.checker_callback,
748
# The checker may have completed before the gobject
749
# watch was added. Check for this.
495
751
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
752
except OSError as error:
753
if error.errno == errno.ECHILD:
754
# This should never happen
755
logger.error("Child process vanished",
760
gobject.source_remove(self.checker_callback_tag)
761
self.checker_callback(pid, status, command)
502
762
# Re-run this periodically if run by gobject.timeout_add
572
870
class DBusObjectWithProperties(dbus.service.Object):
573
871
"""A D-Bus object with properties.
575
873
Classes inheriting from this can use the dbus_service_property
576
874
decorator to expose methods as D-Bus properties. It exposes the
577
875
standard Get(), Set(), and GetAll() methods on the D-Bus.
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
879
def _is_dbus_thing(thing):
880
"""Returns a function testing if an attribute is a D-Bus thing
882
If called like _is_dbus_thing("method") it returns a function
883
suitable for use as predicate to inspect.getmembers().
885
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
584
def _get_all_dbus_properties(self):
888
def _get_all_dbus_things(self, thing):
585
889
"""Returns a generator of (name, attribute) pairs
587
return ((prop._dbus_name, prop)
589
inspect.getmembers(self, self._is_dbus_property))
891
return ((getattr(athing.__get__(self), "_dbus_name",
893
athing.__get__(self))
894
for cls in self.__class__.__mro__
896
inspect.getmembers(cls,
897
self._is_dbus_thing(thing)))
591
899
def _get_dbus_property(self, interface_name, property_name):
592
900
"""Returns a bound method if one exists which is a D-Bus
593
901
property with the specified name and interface.
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
903
for cls in self.__class__.__mro__:
904
for name, value in (inspect.getmembers
906
self._is_dbus_thing("property"))):
907
if (value._dbus_name == property_name
908
and value._dbus_interface == interface_name):
909
return value.__get__(self)
605
911
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
912
raise DBusPropertyNotFound(self.dbus_object_path + ":"
913
+ interface_name + "."
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
916
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
612
918
def Get(self, interface_name, property_name):
613
919
"""Standard D-Bus property Get() method, see D-Bus standard.
615
921
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
922
if prop._dbus_access == "write":
617
923
raise DBusPropertyAccessException(property_name)
619
if not hasattr(value, u"variant_level"):
925
if not hasattr(value, "variant_level"):
621
927
return type(value)(value, variant_level=value.variant_level+1)
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
930
def Set(self, interface_name, property_name, value):
625
931
"""Standard D-Bus property Set() method, see D-Bus standard.
627
933
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
934
if prop._dbus_access == "read":
629
935
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
936
if prop._dbus_get_args_options["byte_arrays"]:
631
937
# The byte_arrays option is not supported yet on
632
938
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
635
value = dbus.ByteArray(''.join(unichr(byte)
939
if prop._dbus_signature != "ay":
940
raise ValueError("Byte arrays not supported for non-"
941
"'ay' signature {0!r}"
942
.format(prop._dbus_signature))
943
value = dbus.ByteArray(b''.join(chr(byte)
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
947
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
out_signature="a{sv}")
641
949
def GetAll(self, interface_name):
642
950
"""Standard D-Bus property GetAll() method, see D-Bus
645
953
Note: Will not include properties with access="write".
648
for name, prop in self._get_all_dbus_properties():
956
for name, prop in self._get_all_dbus_things("property"):
649
957
if (interface_name
650
958
and interface_name != prop._dbus_interface):
651
959
# Interface non-empty but did not match
653
961
# Ignore write-only properties
654
if prop._dbus_access == u"write":
962
if prop._dbus_access == "write":
657
if not hasattr(value, u"variant_level"):
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
970
return dbus.Dictionary(properties, signature="sv")
664
972
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
666
974
path_keyword='object_path',
667
975
connection_keyword='connection')
668
976
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
977
"""Overloading of standard D-Bus method.
979
Inserts property tags and interface annotation tags.
671
981
xmlstring = dbus.service.Object.Introspect(self, object_path,
674
984
document = xml.dom.minidom.parseString(xmlstring)
675
985
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
986
e = document.createElement("property")
987
e.setAttribute("name", name)
988
e.setAttribute("type", prop._dbus_signature)
989
e.setAttribute("access", prop._dbus_access)
681
for if_tag in document.getElementsByTagName(u"interface"):
991
for if_tag in document.getElementsByTagName("interface"):
682
993
for tag in (make_tag(document, name, prop)
684
in self._get_all_dbus_properties()
995
in self._get_all_dbus_things("property")
685
996
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
997
== if_tag.getAttribute("name")):
687
998
if_tag.appendChild(tag)
999
# Add annotation tags
1000
for typ in ("method", "signal", "property"):
1001
for tag in if_tag.getElementsByTagName(typ):
1003
for name, prop in (self.
1004
_get_all_dbus_things(typ)):
1005
if (name == tag.getAttribute("name")
1006
and prop._dbus_interface
1007
== if_tag.getAttribute("name")):
1008
annots.update(getattr
1010
"_dbus_annotations",
1012
for name, value in annots.iteritems():
1013
ann_tag = document.createElement(
1015
ann_tag.setAttribute("name", name)
1016
ann_tag.setAttribute("value", value)
1017
tag.appendChild(ann_tag)
1018
# Add interface annotation tags
1019
for annotation, value in dict(
1020
itertools.chain.from_iterable(
1021
annotations().iteritems()
1022
for name, annotations in
1023
self._get_all_dbus_things("interface")
1024
if name == if_tag.getAttribute("name")
1026
ann_tag = document.createElement("annotation")
1027
ann_tag.setAttribute("name", annotation)
1028
ann_tag.setAttribute("value", value)
1029
if_tag.appendChild(ann_tag)
688
1030
# Add the names to the return values for the
689
1031
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
1032
if (if_tag.getAttribute("name")
1033
== "org.freedesktop.DBus.Properties"):
1034
for cn in if_tag.getElementsByTagName("method"):
1035
if cn.getAttribute("name") == "Get":
1036
for arg in cn.getElementsByTagName("arg"):
1037
if (arg.getAttribute("direction")
1039
arg.setAttribute("name", "value")
1040
elif cn.getAttribute("name") == "GetAll":
1041
for arg in cn.getElementsByTagName("arg"):
1042
if (arg.getAttribute("direction")
1044
arg.setAttribute("name", "props")
1045
xmlstring = document.toxml("utf-8")
704
1046
document.unlink()
705
1047
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
1048
xml.parsers.expat.ExpatError) as error:
1049
logger.error("Failed to override Introspection method",
709
1051
return xmlstring
1054
def datetime_to_dbus(dt, variant_level=0):
1055
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1057
return dbus.String("", variant_level = variant_level)
1058
return dbus.String(dt.isoformat(),
1059
variant_level=variant_level)
1062
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1063
"""A class decorator; applied to a subclass of
1064
dbus.service.Object, it will add alternate D-Bus attributes with
1065
interface names according to the "alt_interface_names" mapping.
1068
@alternate_dbus_interfaces({"org.example.Interface":
1069
"net.example.AlternateInterface"})
1070
class SampleDBusObject(dbus.service.Object):
1071
@dbus.service.method("org.example.Interface")
1072
def SampleDBusMethod():
1075
The above "SampleDBusMethod" on "SampleDBusObject" will be
1076
reachable via two interfaces: "org.example.Interface" and
1077
"net.example.AlternateInterface", the latter of which will have
1078
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1079
"true", unless "deprecate" is passed with a False value.
1081
This works for methods and signals, and also for D-Bus properties
1082
(from DBusObjectWithProperties) and interfaces (from the
1083
dbus_interface_annotations decorator).
1086
for orig_interface_name, alt_interface_name in (
1087
alt_interface_names.iteritems()):
1089
interface_names = set()
1090
# Go though all attributes of the class
1091
for attrname, attribute in inspect.getmembers(cls):
1092
# Ignore non-D-Bus attributes, and D-Bus attributes
1093
# with the wrong interface name
1094
if (not hasattr(attribute, "_dbus_interface")
1095
or not attribute._dbus_interface
1096
.startswith(orig_interface_name)):
1098
# Create an alternate D-Bus interface name based on
1100
alt_interface = (attribute._dbus_interface
1101
.replace(orig_interface_name,
1102
alt_interface_name))
1103
interface_names.add(alt_interface)
1104
# Is this a D-Bus signal?
1105
if getattr(attribute, "_dbus_is_signal", False):
1106
# Extract the original non-method undecorated
1107
# function by black magic
1108
nonmethod_func = (dict(
1109
zip(attribute.func_code.co_freevars,
1110
attribute.__closure__))["func"]
1112
# Create a new, but exactly alike, function
1113
# object, and decorate it to be a new D-Bus signal
1114
# with the alternate D-Bus interface name
1115
new_function = (dbus.service.signal
1117
attribute._dbus_signature)
1118
(types.FunctionType(
1119
nonmethod_func.func_code,
1120
nonmethod_func.func_globals,
1121
nonmethod_func.func_name,
1122
nonmethod_func.func_defaults,
1123
nonmethod_func.func_closure)))
1124
# Copy annotations, if any
1126
new_function._dbus_annotations = (
1127
dict(attribute._dbus_annotations))
1128
except AttributeError:
1130
# Define a creator of a function to call both the
1131
# original and alternate functions, so both the
1132
# original and alternate signals gets sent when
1133
# the function is called
1134
def fixscope(func1, func2):
1135
"""This function is a scope container to pass
1136
func1 and func2 to the "call_both" function
1137
outside of its arguments"""
1138
def call_both(*args, **kwargs):
1139
"""This function will emit two D-Bus
1140
signals by calling func1 and func2"""
1141
func1(*args, **kwargs)
1142
func2(*args, **kwargs)
1144
# Create the "call_both" function and add it to
1146
attr[attrname] = fixscope(attribute, new_function)
1147
# Is this a D-Bus method?
1148
elif getattr(attribute, "_dbus_is_method", False):
1149
# Create a new, but exactly alike, function
1150
# object. Decorate it to be a new D-Bus method
1151
# with the alternate D-Bus interface name. Add it
1153
attr[attrname] = (dbus.service.method
1155
attribute._dbus_in_signature,
1156
attribute._dbus_out_signature)
1158
(attribute.func_code,
1159
attribute.func_globals,
1160
attribute.func_name,
1161
attribute.func_defaults,
1162
attribute.func_closure)))
1163
# Copy annotations, if any
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1167
except AttributeError:
1169
# Is this a D-Bus property?
1170
elif getattr(attribute, "_dbus_is_property", False):
1171
# Create a new, but exactly alike, function
1172
# object, and decorate it to be a new D-Bus
1173
# property with the alternate D-Bus interface
1174
# name. Add it to the class.
1175
attr[attrname] = (dbus_service_property
1177
attribute._dbus_signature,
1178
attribute._dbus_access,
1180
._dbus_get_args_options
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1188
# Copy annotations, if any
1190
attr[attrname]._dbus_annotations = (
1191
dict(attribute._dbus_annotations))
1192
except AttributeError:
1194
# Is this a D-Bus interface?
1195
elif getattr(attribute, "_dbus_is_interface", False):
1196
# Create a new, but exactly alike, function
1197
# object. Decorate it to be a new D-Bus interface
1198
# with the alternate D-Bus interface name. Add it
1200
attr[attrname] = (dbus_interface_annotations
1203
(attribute.func_code,
1204
attribute.func_globals,
1205
attribute.func_name,
1206
attribute.func_defaults,
1207
attribute.func_closure)))
1209
# Deprecate all alternate interfaces
1210
iname="_AlternateDBusNames_interface_annotation{0}"
1211
for interface_name in interface_names:
1212
@dbus_interface_annotations(interface_name)
1214
return { "org.freedesktop.DBus.Deprecated":
1216
# Find an unused name
1217
for aname in (iname.format(i)
1218
for i in itertools.count()):
1219
if aname not in attr:
1223
# Replace the class with a new subclass of it with
1224
# methods, signals, etc. as created above.
1225
cls = type(b"{0}Alternate".format(cls.__name__),
1231
@alternate_dbus_interfaces({"se.recompile.Mandos":
1232
"se.bsnet.fukt.Mandos"})
712
1233
class ClientDBus(Client, DBusObjectWithProperties):
713
1234
"""A Client class using D-Bus
720
1241
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1242
+ ("dbus_object_path",))
723
1244
# dbus.service.Object doesn't use super(), so we can't either.
725
1246
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
728
1248
Client.__init__(self, *args, **kwargs)
729
1249
# Only now, when this client is initialized, can it show up on
731
1251
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1252
{ord("."): ord("_"),
1253
ord("-"): ord("_")})
734
1254
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1255
("/clients/" + client_object_name))
736
1256
DBusObjectWithProperties.__init__(self, self.bus,
737
1257
self.dbus_object_path)
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
1259
def notifychangeproperty(transform_func,
1260
dbus_name, type_func=lambda x: x,
1262
""" Modify a variable so that it's a property which announces
1263
its changes to DBus.
1265
transform_fun: Function that takes a value and a variant_level
1266
and transforms it to a D-Bus type.
1267
dbus_name: D-Bus name of the variable
1268
type_func: Function that transform the value before sending it
1269
to the D-Bus. Default: no transform
1270
variant_level: D-Bus variant level. Default: 1
1272
attrname = "_{0}".format(dbus_name)
1273
def setter(self, value):
1274
if hasattr(self, "dbus_object_path"):
1275
if (not hasattr(self, attrname) or
1276
type_func(getattr(self, attrname, None))
1277
!= type_func(value)):
1278
dbus_value = transform_func(type_func(value),
1281
self.PropertyChanged(dbus.String(dbus_name),
1283
setattr(self, attrname, value)
1285
return property(lambda self: getattr(self, attrname), setter)
1287
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1288
approvals_pending = notifychangeproperty(dbus.Boolean,
1291
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1292
last_enabled = notifychangeproperty(datetime_to_dbus,
1294
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
1297
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1300
"LastCheckerStatus")
1301
last_approval_request = notifychangeproperty(
1302
datetime_to_dbus, "LastApprovalRequest")
1303
approved_by_default = notifychangeproperty(dbus.Boolean,
1304
"ApprovedByDefault")
1305
approval_delay = notifychangeproperty(dbus.UInt64,
1308
timedelta_to_milliseconds)
1309
approval_duration = notifychangeproperty(
1310
dbus.UInt64, "ApprovalDuration",
1311
type_func = timedelta_to_milliseconds)
1312
host = notifychangeproperty(dbus.String, "Host")
1313
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1315
timedelta_to_milliseconds)
1316
extended_timeout = notifychangeproperty(
1317
dbus.UInt64, "ExtendedTimeout",
1318
type_func = timedelta_to_milliseconds)
1319
interval = notifychangeproperty(dbus.UInt64,
1322
timedelta_to_milliseconds)
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1325
del notifychangeproperty
783
1327
def __del__(self, *args, **kwargs):
785
1329
self.remove_from_connection()
786
1330
except LookupError:
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1332
if hasattr(DBusObjectWithProperties, "__del__"):
789
1333
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1334
Client.__del__(self, *args, **kwargs)
811
1352
return Client.checker_callback(self, pid, condition, command,
812
1353
*args, **kwargs)
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
832
1355
def start_checker(self, *args, **kwargs):
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
837
old_checker_pid = None
1356
old_checker_pid = getattr(self.checker, "pid", None)
838
1357
r = Client.start_checker(self, *args, **kwargs)
839
1358
# Only if new checker process was started
840
1359
if (self.checker is not None
841
1360
and old_checker_pid != self.checker.pid):
842
1361
# Emit D-Bus signal
843
1362
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
858
1365
def _reset_approved(self):
859
self._approved = None
1366
self.approved = None
862
1369
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1370
self.approved = value
1371
gobject.timeout_add(timedelta_to_milliseconds
866
1372
(self.approval_duration),
867
1373
self._reset_approved)
1374
self.send_changedstate()
870
1376
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1377
_interface = "se.recompile.Mandos.Client"
1381
@dbus_interface_annotations(_interface)
1383
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
875
1388
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1389
@dbus.service.signal(_interface, signature="nxs")
877
1390
def CheckerCompleted(self, exitcode, waitstatus, command):
881
1394
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1395
@dbus.service.signal(_interface, signature="s")
883
1396
def CheckerStarted(self, command):
887
1400
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1401
@dbus.service.signal(_interface, signature="sv")
889
1402
def PropertyChanged(self, property, value):
951
1464
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1465
@dbus_service_property(_interface, signature="b", access="read")
953
1466
def ApprovalPending_dbus_property(self):
954
1467
return dbus.Boolean(bool(self.approvals_pending))
956
1469
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
1470
@dbus_service_property(_interface, signature="b",
959
1472
def ApprovedByDefault_dbus_property(self, value=None):
960
1473
if value is None: # get
961
1474
return dbus.Boolean(self.approved_by_default)
962
1475
self.approved_by_default = bool(value)
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
967
1477
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
1478
@dbus_service_property(_interface, signature="t",
970
1480
def ApprovalDelay_dbus_property(self, value=None):
971
1481
if value is None: # get
972
1482
return dbus.UInt64(self.approval_delay_milliseconds())
973
1483
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
978
1485
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
1486
@dbus_service_property(_interface, signature="t",
981
1488
def ApprovalDuration_dbus_property(self, value=None):
982
1489
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1490
return dbus.UInt64(timedelta_to_milliseconds(
984
1491
self.approval_duration))
985
1492
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
990
1494
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1495
@dbus_service_property(_interface, signature="s", access="read")
992
1496
def Name_dbus_property(self):
993
1497
return dbus.String(self.name)
995
1499
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1500
@dbus_service_property(_interface, signature="s", access="read")
997
1501
def Fingerprint_dbus_property(self):
998
1502
return dbus.String(self.fingerprint)
1000
1504
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1505
@dbus_service_property(_interface, signature="s",
1003
1507
def Host_dbus_property(self, value=None):
1004
1508
if value is None: # get
1005
1509
return dbus.String(self.host)
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1510
self.host = unicode(value)
1011
1512
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1513
@dbus_service_property(_interface, signature="s", access="read")
1013
1514
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1515
return datetime_to_dbus(self.created)
1016
1517
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1518
@dbus_service_property(_interface, signature="s", access="read")
1018
1519
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1520
return datetime_to_dbus(self.last_enabled)
1023
1522
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1523
@dbus_service_property(_interface, signature="b",
1026
1525
def Enabled_dbus_property(self, value=None):
1027
1526
if value is None: # get
1028
1527
return dbus.Boolean(self.enabled)
1034
1533
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1534
@dbus_service_property(_interface, signature="s",
1037
1536
def LastCheckedOK_dbus_property(self, value=None):
1038
1537
if value is not None:
1039
1538
self.checked_ok()
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1540
return datetime_to_dbus(self.last_checked_ok)
1542
# LastCheckerStatus - property
1543
@dbus_service_property(_interface, signature="n",
1545
def LastCheckerStatus_dbus_property(self):
1546
return dbus.Int16(self.last_checker_status)
1548
# Expires - property
1549
@dbus_service_property(_interface, signature="s", access="read")
1550
def Expires_dbus_property(self):
1551
return datetime_to_dbus(self.expires)
1046
1553
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1554
@dbus_service_property(_interface, signature="s", access="read")
1048
1555
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1556
return datetime_to_dbus(self.last_approval_request)
1055
1558
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1559
@dbus_service_property(_interface, signature="t",
1058
1561
def Timeout_dbus_property(self, value=None):
1059
1562
if value is None: # get
1060
1563
return dbus.UInt64(self.timeout_milliseconds())
1564
old_timeout = self.timeout
1061
1565
self.timeout = datetime.timedelta(0, 0, 0, value)
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1076
if time_to_die <= 0:
1077
# The timeout has passed
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1566
# Reschedule disabling
1568
now = datetime.datetime.utcnow()
1569
self.expires += self.timeout - old_timeout
1570
if self.expires <= now:
1571
# The timeout has passed
1574
if (getattr(self, "disable_initiator_tag", None)
1577
gobject.source_remove(self.disable_initiator_tag)
1578
self.disable_initiator_tag = (
1579
gobject.timeout_add(
1580
timedelta_to_milliseconds(self.expires - now),
1583
# ExtendedTimeout - property
1584
@dbus_service_property(_interface, signature="t",
1586
def ExtendedTimeout_dbus_property(self, value=None):
1587
if value is None: # get
1588
return dbus.UInt64(self.extended_timeout_milliseconds())
1589
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1083
1591
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1592
@dbus_service_property(_interface, signature="t",
1086
1594
def Interval_dbus_property(self, value=None):
1087
1595
if value is None: # get
1088
1596
return dbus.UInt64(self.interval_milliseconds())
1089
1597
self.interval = datetime.timedelta(0, 0, 0, value)
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1598
if getattr(self, "checker_initiator_tag", None) is None:
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1601
# Reschedule checker run
1602
gobject.source_remove(self.checker_initiator_tag)
1603
self.checker_initiator_tag = (gobject.timeout_add
1604
(value, self.start_checker))
1605
self.start_checker() # Start one now, too
1101
1607
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1608
@dbus_service_property(_interface, signature="s",
1104
1610
def Checker_dbus_property(self, value=None):
1105
1611
if value is None: # get
1106
1612
return dbus.String(self.checker_command)
1107
self.checker_command = value
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1613
self.checker_command = unicode(value)
1113
1615
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1616
@dbus_service_property(_interface, signature="b",
1116
1618
def CheckerRunning_dbus_property(self, value=None):
1117
1619
if value is None: # get
1118
1620
return dbus.Boolean(self.checker is not None)
1170
1672
def handle(self):
1171
1673
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1674
logger.info("TCP connection from: %s",
1173
1675
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1676
logger.debug("Pipe FD: %d",
1175
1677
self.server.child_pipe.fileno())
1177
1679
session = (gnutls.connection
1178
1680
.ClientSession(self.request,
1179
1681
gnutls.connection
1180
1682
.X509Credentials()))
1182
1684
# Note: gnutls.connection.X509Credentials is really a
1183
1685
# generic GnuTLS certificate credentials object so long as
1184
1686
# no X.509 keys are added to it. Therefore, we can use it
1185
1687
# here despite using OpenPGP certificates.
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1689
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1690
# "+AES-256-CBC", "+SHA1",
1691
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
1693
# Use a fallback default, since this MUST be set.
1192
1694
priority = self.server.gnutls_priority
1193
1695
if priority is None:
1194
priority = u"NORMAL"
1195
1697
(gnutls.library.functions
1196
1698
.gnutls_priority_set_direct(session._c_object,
1197
1699
priority, None))
1199
1701
# Start communication using the Mandos protocol
1200
1702
# Get protocol number
1201
1703
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1704
logger.debug("Protocol version: %r", line)
1204
1706
if int(line.strip().split()[0]) > 1:
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1707
raise RuntimeError(line)
1708
except (ValueError, IndexError, RuntimeError) as error:
1709
logger.error("Unknown protocol version: %s", error)
1210
1712
# Start GnuTLS connection
1212
1714
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1715
except gnutls.errors.GNUTLSError as error:
1716
logger.warning("Handshake failed: %s", error)
1215
1717
# Do not run session.bye() here: the session is not
1216
1718
# established. Just abandon the request.
1218
logger.debug(u"Handshake succeeded")
1720
logger.debug("Handshake succeeded")
1220
1722
approval_required = False
1223
1725
fpr = self.fingerprint(self.peer_certificate
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1728
gnutls.errors.GNUTLSError) as error:
1729
logger.warning("Bad certificate: %s", error)
1228
logger.debug(u"Fingerprint: %s", fpr)
1731
logger.debug("Fingerprint: %s", fpr)
1231
1734
client = ProxyClient(child_pipe, fpr,
1232
1735
self.client_address)
1420
1930
use_ipv6: Boolean; to use IPv6 or not
1422
1932
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1933
interface=None, use_ipv6=True, socketfd=None):
1934
"""If socketfd is set, use that file descriptor instead of
1935
creating a new one with socket.socket().
1424
1937
self.interface = interface
1426
1939
self.address_family = socket.AF_INET6
1940
if socketfd is not None:
1941
# Save the file descriptor
1942
self.socketfd = socketfd
1943
# Save the original socket.socket() function
1944
self.socket_socket = socket.socket
1945
# To implement --socket, we monkey patch socket.socket.
1947
# (When socketserver.TCPServer is a new-style class, we
1948
# could make self.socket into a property instead of monkey
1949
# patching socket.socket.)
1951
# Create a one-time-only replacement for socket.socket()
1952
@functools.wraps(socket.socket)
1953
def socket_wrapper(*args, **kwargs):
1954
# Restore original function so subsequent calls are
1956
socket.socket = self.socket_socket
1957
del self.socket_socket
1958
# This time only, return a new socket object from the
1959
# saved file descriptor.
1960
return socket.fromfd(self.socketfd, *args, **kwargs)
1961
# Replace socket.socket() function with wrapper
1962
socket.socket = socket_wrapper
1963
# The socketserver.TCPServer.__init__ will call
1964
# socket.socket(), which might be our replacement,
1965
# socket_wrapper(), if socketfd was set.
1427
1966
socketserver.TCPServer.__init__(self, server_address,
1428
1967
RequestHandlerClass)
1429
1969
def server_bind(self):
1430
1970
"""This overrides the normal server_bind() function
1431
1971
to bind to an interface if one was specified, and also NOT to
1432
1972
bind to an address or port if they were not specified."""
1433
1973
if self.interface is not None:
1434
1974
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1975
logger.error("SO_BINDTODEVICE does not exist;"
1976
" cannot bind to interface %s",
1437
1977
self.interface)
1440
1980
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1981
SO_BINDTODEVICE,
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1982
str(self.interface + '\0'))
1983
except socket.error as error:
1984
if error.errno == errno.EPERM:
1985
logger.error("No permission to bind to"
1986
" interface %s", self.interface)
1987
elif error.errno == errno.ENOPROTOOPT:
1988
logger.error("SO_BINDTODEVICE not available;"
1989
" cannot bind to interface %s",
1991
elif error.errno == errno.ENODEV:
1992
logger.error("Interface %s does not exist,"
1993
" cannot bind", self.interface)
1455
1996
# Only bind(2) the socket if we really need to.
1456
1997
if self.server_address[0] or self.server_address[1]:
1457
1998
if not self.server_address[0]:
1458
1999
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
2000
any_address = "::" # in6addr_any
1461
any_address = socket.INADDR_ANY
2002
any_address = "0.0.0.0" # INADDR_ANY
1462
2003
self.server_address = (any_address,
1463
2004
self.server_address[1])
1464
2005
elif not self.server_address[1]:
1536
2070
fpr = request[1]
1537
2071
address = request[2]
1539
for c in self.clients:
2073
for c in self.clients.itervalues():
1540
2074
if c.fingerprint == fpr:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2078
logger.info("Client not found for fingerprint: %s, ad"
2079
"dress: %s", fpr, address)
1546
2080
if self.use_dbus:
1547
2081
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2082
mandos_dbus_service.ClientNotFound(fpr,
1549
2084
parent_pipe.send(False)
1552
2087
gobject.io_add_watch(parent_pipe.fileno(),
1553
2088
gobject.IO_IN | gobject.IO_HUP,
1554
2089
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1557
2095
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2096
# remove the old hook in favor of the new above hook on
1560
2099
if command == 'funcall':
1561
2100
funcname = request[1]
1562
2101
args = request[2]
1563
2102
kwargs = request[3]
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2104
parent_pipe.send(('data', getattr(client_object,
1567
2108
if command == 'getattr':
1568
2109
attrname = request[1]
1569
2110
if callable(client_object.__getattribute__(attrname)):
1570
2111
parent_pipe.send(('function',))
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
1574
2116
if command == 'setattr':
1575
2117
attrname = request[1]
1576
2118
value = request[2]
1577
2119
setattr(client_object, attrname, value)
2124
def rfc3339_duration_to_delta(duration):
2125
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2127
>>> rfc3339_duration_to_delta("P7D")
2128
datetime.timedelta(7)
2129
>>> rfc3339_duration_to_delta("PT60S")
2130
datetime.timedelta(0, 60)
2131
>>> rfc3339_duration_to_delta("PT60M")
2132
datetime.timedelta(0, 3600)
2133
>>> rfc3339_duration_to_delta("PT24H")
2134
datetime.timedelta(1)
2135
>>> rfc3339_duration_to_delta("P1W")
2136
datetime.timedelta(7)
2137
>>> rfc3339_duration_to_delta("PT5M30S")
2138
datetime.timedelta(0, 330)
2139
>>> rfc3339_duration_to_delta("P1DT3M20S")
2140
datetime.timedelta(1, 200)
2143
# Parsing an RFC 3339 duration with regular expressions is not
2144
# possible - there would have to be multiple places for the same
2145
# values, like seconds. The current code, while more esoteric, is
2146
# cleaner without depending on a parsing library. If Python had a
2147
# built-in library for parsing we would use it, but we'd like to
2148
# avoid excessive use of external libraries.
2150
# New type for defining tokens, syntax, and semantics all-in-one
2151
Token = collections.namedtuple("Token",
2152
("regexp", # To match token; if
2153
# "value" is not None,
2154
# must have a "group"
2156
"value", # datetime.timedelta or
2158
"followers")) # Tokens valid after
2160
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2161
# the "duration" ABNF definition in RFC 3339, Appendix A.
2162
token_end = Token(re.compile(r"$"), None, frozenset())
2163
token_second = Token(re.compile(r"(\d+)S"),
2164
datetime.timedelta(seconds=1),
2165
frozenset((token_end,)))
2166
token_minute = Token(re.compile(r"(\d+)M"),
2167
datetime.timedelta(minutes=1),
2168
frozenset((token_second, token_end)))
2169
token_hour = Token(re.compile(r"(\d+)H"),
2170
datetime.timedelta(hours=1),
2171
frozenset((token_minute, token_end)))
2172
token_time = Token(re.compile(r"T"),
2174
frozenset((token_hour, token_minute,
2176
token_day = Token(re.compile(r"(\d+)D"),
2177
datetime.timedelta(days=1),
2178
frozenset((token_time, token_end)))
2179
token_month = Token(re.compile(r"(\d+)M"),
2180
datetime.timedelta(weeks=4),
2181
frozenset((token_day, token_end)))
2182
token_year = Token(re.compile(r"(\d+)Y"),
2183
datetime.timedelta(weeks=52),
2184
frozenset((token_month, token_end)))
2185
token_week = Token(re.compile(r"(\d+)W"),
2186
datetime.timedelta(weeks=1),
2187
frozenset((token_end,)))
2188
token_duration = Token(re.compile(r"P"), None,
2189
frozenset((token_year, token_month,
2190
token_day, token_time,
2192
# Define starting values
2193
value = datetime.timedelta() # Value so far
2195
followers = frozenset(token_duration,) # Following valid tokens
2196
s = duration # String left to parse
2197
# Loop until end token is found
2198
while found_token is not token_end:
2199
# Search for any currently valid tokens
2200
for token in followers:
2201
match = token.regexp.match(s)
2202
if match is not None:
2204
if token.value is not None:
2205
# Value found, parse digits
2206
factor = int(match.group(1), 10)
2207
# Add to value so far
2208
value += factor * token.value
2209
# Strip token from string
2210
s = token.regexp.sub("", s, 1)
2213
# Set valid next tokens
2214
followers = found_token.followers
2217
# No currently valid tokens were found
2218
raise ValueError("Invalid RFC 3339 duration")
1582
2223
def string_to_delta(interval):
1583
2224
"""Parse a string and return a datetime.timedelta
1585
>>> string_to_delta(u'7d')
2226
>>> string_to_delta('7d')
1586
2227
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2228
>>> string_to_delta('60s')
1588
2229
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2230
>>> string_to_delta('60m')
1590
2231
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2232
>>> string_to_delta('24h')
1592
2233
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2234
>>> string_to_delta('1w')
1594
2235
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2236
>>> string_to_delta('5m 30s')
1596
2237
datetime.timedelta(0, 330)
2241
return rfc3339_duration_to_delta(interval)
1598
2245
timevalue = datetime.timedelta(0)
1599
2246
for s in interval.split():
1601
2248
suffix = unicode(s[-1])
1602
2249
value = int(s[:-1])
1604
2251
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
1606
2253
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
1608
2255
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
1610
2257
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
1612
2259
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2261
raise ValueError("Unknown suffix {0!r}"
2263
except IndexError as e:
2264
raise ValueError(*(e.args))
1617
2265
timevalue += delta
1618
2266
return timevalue
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1639
interface_index = struct.unpack(str(u"I"),
1641
return interface_index
1642
return if_nametoindex(interface)
1645
2269
def daemon(nochdir = False, noclose = False):
1646
2270
"""See daemon(3). Standard BSD Unix function.
1672
2296
##################################################################
1673
2297
# Parsing of options, both command line and config file
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2299
parser = argparse.ArgumentParser()
2300
parser.add_argument("-v", "--version", action="version",
2301
version = "%(prog)s {0}".format(version),
2302
help="show version number and exit")
2303
parser.add_argument("-i", "--interface", metavar="IF",
2304
help="Bind to interface IF")
2305
parser.add_argument("-a", "--address",
2306
help="Address to listen for requests on")
2307
parser.add_argument("-p", "--port", type=int,
2308
help="Port number to receive requests on")
2309
parser.add_argument("--check", action="store_true",
2310
help="Run self-test")
2311
parser.add_argument("--debug", action="store_true",
2312
help="Debug mode; run in foreground and log"
2313
" to terminal", default=None)
2314
parser.add_argument("--debuglevel", metavar="LEVEL",
2315
help="Debug level for stdout output")
2316
parser.add_argument("--priority", help="GnuTLS"
2317
" priority string (see GnuTLS documentation)")
2318
parser.add_argument("--servicename",
2319
metavar="NAME", help="Zeroconf service name")
2320
parser.add_argument("--configdir",
2321
default="/etc/mandos", metavar="DIR",
2322
help="Directory to search for configuration"
2324
parser.add_argument("--no-dbus", action="store_false",
2325
dest="use_dbus", help="Do not provide D-Bus"
2326
" system bus interface", default=None)
2327
parser.add_argument("--no-ipv6", action="store_false",
2328
dest="use_ipv6", help="Do not use IPv6",
2330
parser.add_argument("--no-restore", action="store_false",
2331
dest="restore", help="Do not restore stored"
2332
" state", default=None)
2333
parser.add_argument("--socket", type=int,
2334
help="Specify a file descriptor to a network"
2335
" socket to use instead of creating one")
2336
parser.add_argument("--statedir", metavar="DIR",
2337
help="Directory to save/restore state in")
2338
parser.add_argument("--foreground", action="store_true",
2339
help="Run in foreground", default=None)
2340
parser.add_argument("--no-zeroconf", action="store_false",
2341
dest="zeroconf", help="Do not use Zeroconf",
2344
options = parser.parse_args()
1704
2346
if options.check:
2348
fail_count, test_count = doctest.testmod()
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
1709
2351
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
2352
server_defaults = { "interface": "",
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2358
"servicename": "Mandos",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
1722
2369
# Parse config file for server-global settings
1723
2370
server_config = configparser.SafeConfigParser(server_defaults)
1724
2371
del server_defaults
1725
2372
server_config.read(os.path.join(options.configdir,
1727
2374
# Convert the SafeConfigParser object to a dict
1728
2375
server_settings = server_config.defaults()
1729
2376
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2377
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2378
server_settings[option] = server_config.getboolean("DEFAULT",
1733
2380
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
2381
server_settings["port"] = server_config.getint("DEFAULT",
2383
if server_settings["socket"]:
2384
server_settings["socket"] = server_config.getint("DEFAULT",
2386
# Later, stdin will, and stdout and stderr might, be dup'ed
2387
# over with an opened os.devnull. But we don't want this to
2388
# happen with a supplied network socket.
2389
if 0 <= server_settings["socket"] <= 2:
2390
server_settings["socket"] = os.dup(server_settings
1736
2392
del server_config
1738
2394
# Override the settings from the config file with command line
1739
2395
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2396
for option in ("interface", "address", "port", "debug",
2397
"priority", "servicename", "configdir",
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
1743
2400
value = getattr(options, option)
1744
2401
if value is not None:
1745
2402
server_settings[option] = value
1748
2405
for option in server_settings.keys():
1749
2406
if type(server_settings[option]) is str:
1750
2407
server_settings[option] = unicode(server_settings[option])
2408
# Force all boolean options to be boolean
2409
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2410
"foreground", "zeroconf"):
2411
server_settings[option] = bool(server_settings[option])
2412
# Debug implies foreground
2413
if server_settings["debug"]:
2414
server_settings["foreground"] = True
1751
2415
# Now we have our good server settings in "server_settings"
1753
2417
##################################################################
2419
if (not server_settings["zeroconf"] and
2420
not (server_settings["port"]
2421
or server_settings["socket"] != "")):
2422
parser.error("Needs port or socket to work without"
1755
2425
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1761
if server_settings[u"servicename"] != u"Mandos":
2426
debug = server_settings["debug"]
2427
debuglevel = server_settings["debuglevel"]
2428
use_dbus = server_settings["use_dbus"]
2429
use_ipv6 = server_settings["use_ipv6"]
2430
stored_state_path = os.path.join(server_settings["statedir"],
2432
foreground = server_settings["foreground"]
2433
zeroconf = server_settings["zeroconf"]
2436
initlogger(debug, logging.DEBUG)
2441
level = getattr(logging, debuglevel.upper())
2442
initlogger(debug, level)
2444
if server_settings["servicename"] != "Mandos":
1762
2445
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
1767
2451
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1770
u"checker": u"fping -q -- %%(host)s",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
2452
client_config = configparser.SafeConfigParser(Client
2454
client_config.read(os.path.join(server_settings["configdir"],
1779
2457
global mandos_dbus_service
1780
2458
mandos_dbus_service = None
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2461
if server_settings["socket"] != "":
2462
socketfd = server_settings["socket"]
2463
tcp_server = MandosServer((server_settings["address"],
2464
server_settings["port"]),
1785
interface=(server_settings[u"interface"]
2466
interface=(server_settings["interface"]
1787
2468
use_ipv6=use_ipv6,
1788
2469
gnutls_priority=
1789
server_settings[u"priority"],
1792
pidfilename = u"/var/run/mandos.pid"
2470
server_settings["priority"],
2474
pidfilename = "/run/mandos.pid"
2475
if not os.path.isdir("/run/."):
2476
pidfilename = "/var/run/mandos.pid"
1794
pidfile = open(pidfilename, u"w")
1796
logger.error(u"Could not open file %r", pidfilename)
2479
pidfile = open(pidfilename, "w")
2480
except IOError as e:
2481
logger.error("Could not open file %r", pidfilename,
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
2484
for name in ("_mandos", "mandos", "nobody"):
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2486
uid = pwd.getpwnam(name).pw_uid
2487
gid = pwd.getpwnam(name).pw_gid
1805
2489
except KeyError:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
2497
except OSError as error:
2498
if error.errno != errno.EPERM:
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1828
2502
# Enable all possible GnuTLS debugging
1834
2508
@gnutls.library.types.gnutls_log_func
1835
2509
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2510
logger.debug("GnuTLS: %s", string[:-1])
1838
2512
(gnutls.library.functions
1839
2513
.gnutls_global_set_log_function(debug_gnutls))
1841
2515
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2517
os.dup2(null, sys.stdin.fileno())
1847
# No console logging
1848
logger.removeHandler(console)
2521
# Need to fork before connecting to D-Bus
2523
# Close all input and output, do double fork, etc.
2526
# multiprocessing will use threads, so before we use gobject we
2527
# need to inform gobject that threads will be used.
2528
gobject.threads_init()
1851
2530
global main_loop
1852
2531
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2532
DBusGMainLoop(set_as_default=True)
1854
2533
main_loop = gobject.MainLoop()
1855
2534
bus = dbus.SystemBus()
1856
2535
# End of Avahi example code
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2539
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2543
except dbus.exceptions.NameExistsException as e:
2544
logger.error("Disabling D-Bus:", exc_info=e)
1863
2545
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2546
server_settings["use_dbus"] = False
1865
2547
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1875
# Close all input and output, do double fork, etc.
2549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2550
service = AvahiServiceToSyslog(name =
2551
server_settings["servicename"],
2552
servicetype = "_mandos._tcp",
2553
protocol = protocol, bus = bus)
2554
if server_settings["interface"]:
2555
service.interface = (if_nametoindex
2556
(str(server_settings["interface"])))
1878
2558
global multiprocessing_manager
1879
2559
multiprocessing_manager = multiprocessing.Manager()
1881
2561
client_class = Client
1883
2563
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1890
for name, value in config.items(section):
2565
client_settings = Client.config_parser(client_config)
2566
old_client_settings = {}
2569
# This is used to redirect stdout and stderr for checker processes
2571
wnull = open(os.devnull, "w") # A writable /dev/null
2572
# Only used if server is running in foreground but not in debug
2574
if debug or not foreground:
2577
# Get client data and settings from last running state.
2578
if server_settings["restore"]:
2580
with open(stored_state_path, "rb") as stored_state:
2581
clients_data, old_client_settings = (pickle.load
2583
os.remove(stored_state_path)
2584
except IOError as e:
2585
if e.errno == errno.ENOENT:
2586
logger.warning("Could not load persistent state: {0}"
2587
.format(os.strerror(e.errno)))
2589
logger.critical("Could not load persistent state:",
2592
except EOFError as e:
2593
logger.warning("Could not load persistent state: "
2594
"EOFError:", exc_info=e)
2596
with PGPEngine() as pgp:
2597
for client_name, client in clients_data.iteritems():
2598
# Skip removed clients
2599
if client_name not in client_settings:
2602
# Decide which value to use after restoring saved state.
2603
# We have three different values: Old config file,
2604
# new config file, and saved state.
2605
# New config value takes precedence if it differs from old
2606
# config value, otherwise use saved state.
2607
for name, value in client_settings[client_name].items():
2609
# For each value in new config, check if it
2610
# differs from the old config value (Except for
2611
# the "secret" attribute)
2612
if (name != "secret" and
2613
value != old_client_settings[client_name]
2615
client[name] = value
2619
# Clients who has passed its expire date can still be
2620
# enabled if its last checker was successful. Clients
2621
# whose checker succeeded before we stored its state is
2622
# assumed to have successfully run all checkers during
2624
if client["enabled"]:
2625
if datetime.datetime.utcnow() >= client["expires"]:
2626
if not client["last_checked_ok"]:
2628
"disabling client {0} - Client never "
2629
"performed a successful checker"
2630
.format(client_name))
2631
client["enabled"] = False
2632
elif client["last_checker_status"] != 0:
2634
"disabling client {0} - Client "
2635
"last checker failed with error code {1}"
2636
.format(client_name,
2637
client["last_checker_status"]))
2638
client["enabled"] = False
2640
client["expires"] = (datetime.datetime
2642
+ client["timeout"])
2643
logger.debug("Last checker succeeded,"
2644
" keeping {0} enabled"
2645
.format(client_name))
1892
yield (name, special_settings[name]())
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2647
client["secret"] = (
2648
pgp.decrypt(client["encrypted_secret"],
2649
client_settings[client_name]
2652
# If decryption fails, we use secret from new settings
2653
logger.debug("Failed to decrypt {0} old secret"
2654
.format(client_name))
2655
client["secret"] = (
2656
client_settings[client_name]["secret"])
2658
# Add/remove clients based on new changes made to config
2659
for client_name in (set(old_client_settings)
2660
- set(client_settings)):
2661
del clients_data[client_name]
2662
for client_name in (set(client_settings)
2663
- set(old_client_settings)):
2664
clients_data[client_name] = client_settings[client_name]
2666
# Create all client objects
2667
for client_name, client in clients_data.iteritems():
2668
tcp_server.clients[client_name] = client_class(
2669
name = client_name, settings = client,
2670
server_settings = server_settings)
1901
2672
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1908
pidfile.write(str(pid) + "\n")
1911
logger.error(u"Could not write to file %r with PID %d",
1914
# "pidfile" was never created
2673
logger.warning("No clients defined")
2676
if pidfile is not None:
2680
pidfile.write(str(pid) + "\n".encode("utf-8"))
2682
logger.error("Could not write to file %r with PID %d",
1916
2685
del pidfilename
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
2687
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2688
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1924
class MandosDBusService(dbus.service.Object):
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
1925
2694
"""A D-Bus proxy object"""
1926
2695
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1930
@dbus.service.signal(_interface, signature=u"o")
2696
dbus.service.Object.__init__(self, bus, "/")
2697
_interface = "se.recompile.Mandos"
2699
@dbus_interface_annotations(_interface)
2701
return { "org.freedesktop.DBus.Property"
2702
".EmitsChangedSignal":
2705
@dbus.service.signal(_interface, signature="o")
1931
2706
def ClientAdded(self, objpath):
1935
@dbus.service.signal(_interface, signature=u"ss")
2710
@dbus.service.signal(_interface, signature="ss")
1936
2711
def ClientNotFound(self, fingerprint, address):
1940
@dbus.service.signal(_interface, signature=u"os")
2715
@dbus.service.signal(_interface, signature="os")
1941
2716
def ClientRemoved(self, objpath, name):
1945
@dbus.service.method(_interface, out_signature=u"ao")
2720
@dbus.service.method(_interface, out_signature="ao")
1946
2721
def GetAllClients(self):
1948
2723
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2725
tcp_server.clients.itervalues())
1951
2727
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2728
out_signature="a{oa{sv}}")
1953
2729
def GetAllClientsWithProperties(self):
1955
2731
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2732
((c.dbus_object_path, c.GetAll(""))
2733
for c in tcp_server.clients.itervalues()),
1960
@dbus.service.method(_interface, in_signature=u"o")
2736
@dbus.service.method(_interface, in_signature="o")
1961
2737
def RemoveClient(self, object_path):
1963
for c in tcp_server.clients:
2739
for c in tcp_server.clients.itervalues():
1964
2740
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2741
del tcp_server.clients[c.name]
1966
2742
c.remove_from_connection()
1967
2743
# Don't signal anything except ClientRemoved
1968
2744
c.disable(quiet=True)
1979
2755
"Cleanup function; run on exit"
2759
multiprocessing.active_children()
2761
if not (tcp_server.clients or client_settings):
2764
# Store client before exiting. Secrets are encrypted with key
2765
# based on what config file has. If config file is
2766
# removed/edited, old secret will thus be unrecovable.
2768
with PGPEngine() as pgp:
2769
for client in tcp_server.clients.itervalues():
2770
key = client_settings[client.name]["secret"]
2771
client.encrypted_secret = pgp.encrypt(client.secret,
2775
# A list of attributes that can not be pickled
2777
exclude = set(("bus", "changedstate", "secret",
2778
"checker", "server_settings"))
2779
for name, typ in (inspect.getmembers
2780
(dbus.service.Object)):
2783
client_dict["encrypted_secret"] = (client
2785
for attr in client.client_structure:
2786
if attr not in exclude:
2787
client_dict[attr] = getattr(client, attr)
2789
clients[client.name] = client_dict
2790
del client_settings[client.name]["secret"]
2793
with (tempfile.NamedTemporaryFile
2794
(mode='wb', suffix=".pickle", prefix='clients-',
2795
dir=os.path.dirname(stored_state_path),
2796
delete=False)) as stored_state:
2797
pickle.dump((clients, client_settings), stored_state)
2798
tempname=stored_state.name
2799
os.rename(tempname, stored_state_path)
2800
except (IOError, OSError) as e:
2806
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2807
logger.warning("Could not save persistent state: {0}"
2808
.format(os.strerror(e.errno)))
2810
logger.warning("Could not save persistent state:",
2814
# Delete all clients, and settings from config
1982
2815
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2816
name, client = tcp_server.clients.popitem()
1985
2818
client.remove_from_connection()
1986
client.disable_hook = None
1987
2819
# Don't signal anything except ClientRemoved
1988
2820
client.disable(quiet=True)
1990
2822
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2823
mandos_dbus_service.ClientRemoved(client
2826
client_settings.clear()
1994
2828
atexit.register(cleanup)
1996
for client in tcp_server.clients:
2830
for client in tcp_server.clients.itervalues():
1998
2832
# Emit D-Bus signal
1999
2833
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2834
# Need to initiate checking of clients
2836
client.init_checker()
2002
2838
tcp_server.enable()
2003
2839
tcp_server.server_activate()
2005
2841
# Find out what port we got
2006
service.port = tcp_server.socket.getsockname()[1]
2843
service.port = tcp_server.socket.getsockname()[1]
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
2845
logger.info("Now listening on address %r, port %d,"
2846
" flowinfo %d, scope_id %d",
2847
*tcp_server.socket.getsockname())
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2849
logger.info("Now listening on address %r, port %d",
2850
*tcp_server.socket.getsockname())
2015
2852
#service.interface = tcp_server.socket.getsockname()[3]
2018
# From the Avahi example code
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2025
# End of Avahi example code
2856
# From the Avahi example code
2859
except dbus.exceptions.DBusException as error:
2860
logger.critical("D-Bus Exception", exc_info=error)
2863
# End of Avahi example code
2027
2865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
2866
lambda *args, **kwargs:
2029
2867
(tcp_server.handle_request
2030
2868
(*args[2:], **kwargs) or True))
2032
logger.debug(u"Starting main loop")
2870
logger.debug("Starting main loop")
2033
2871
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2872
except AvahiError as error:
2873
logger.critical("Avahi Error", exc_info=error)
2038
2876
except KeyboardInterrupt:
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2878
print("", file=sys.stderr)
2879
logger.debug("Server received KeyboardInterrupt")
2880
logger.debug("Server exiting")
2043
2881
# Must run before the D-Bus bus name gets deregistered